Catch the Scent with the Chuckit! Sniff Fetch Ball! Available in a delicious Peanut Butter & Bacon scent, the Sniff Fetch Ball excites more than 100 Million scent receptors in a dog's nose. This scent attracts dogs, so it makes finding the ball easier and makes playtime even more exciting. Made with durable natural rubber and an extra thick core, the Sniff Fetch balls are developed to have high bounce, high buoyancy and high durability; and are also compatible with any Medium Chuckit! Launcher for the ultimate game of fetch.